Vulnerabilities are caused by Samsung-specific software or customizations to the Android system. They are not caused by bugs inside the “vanilla” Android system, but by Samsung customizations. No specific Android privileges are required for the attacks to succeed. Two different vulnerabilities can be exploited to silently install highly-privileged applications with no user interaction. An additional vulnerability can be used to silently perform almost any action on the victim’s phone, ranging from placing phone calls to sending e-mails, SMS messages, and so on.”]
Source: http://randomthoughts.greyhats.it/2013/03/owning-samsung-phones-for-fun-but-with.html